Man do we wish we could play this game! You apparently figure out the "Riddle of the Masquerade" set in 1921 at a party type thing. It looks amazingly awesome, yet sadly, we need to know TONS more Japanese to really play it.
NOTE: All photos depict good condition items only; actual product may vary.
Used Nazo No Masquerade (good case, good instructions)
Used Nazo No Masquerade (good case, poor instructions)